DS3231SN#T&R Real Time Clock Extremely Accurate I C-Integrated
RTC/TC
The DS3231 is a low-cost, extremely accurate I2C realtime clock
(RTC) with an integrated temperaturecompensated crystal oscillator
(TCXO) and crystal. The device incorporates a battery input, and
maintains accurate timekeeping when main power to the device is
interrupted. The integration of the crystal resonator enhances the
long-term accuracy of the device as well as reduces the piece-part
count in a manufacturing line. The DS3231 is available in
commercial and industrial temperature ranges, and is offered in a
16-pin, 300-mil SO package. The RTC maintains seconds, minutes,
hours, day, date, month, and year information. The date at the end
of the month is automatically adjusted for months with fewer than
31 days, including corrections for leap year. The clock operates in
either the 24-hour or 12-hour format with an AM/PM indicator. Two
programmable time-ofday alarms and a programmable square-wave
output are provided. Address and data are transferred serially
through an I2C bidirectional bus. A precision
temperature-compensated voltage reference and comparator circuit
monitors the status of VCC to detect power failures, to provide a
reset output, and to automatically switch to the backup supply when
necessary. Additionally, the RST pin is monitored as a pushbutton
input for generating a µP reset.
Parameters
| PARAMETER | SYMBOL | CONDITIONS | MIN | TYP | MAX | UNITS |
|---|
| Supply Voltage | VCC | - | 2.3 | 3.3 | 5.5 | V |
| Supply Voltage | VBAT | - | 2.3 | 3.0 | 5.5 | V |
| Logic 1 Input | SDA, SCL | VIH | 0.7 xVCC | - | VCC +0.3 | V |
| Logic 0 Input | SDA, SCL | VIL | -0.3 | - | +0.3 xVCC | V |
Packaging & Shipping
Standard export packaging available. Customers can choose from
cartons, wooden cases, and wooden pallets according to their
requirements.
Frequently Asked Questions
How to obtain the price?
We typically provide quotations within 24 hours of receiving your
inquiry (excluding weekends and holidays). For urgent pricing
requests, please contact us directly.
What is your delivery time?
Small batches typically ship within 7-15 days, while large batch
orders may require approximately 30 days depending on order
quantity and season.
What are your payment terms?
Factory pricing with 30% deposit and 70% balance payment via T/T
before shipment.
What are the shipping options?
Available shipping methods include sea freight, air freight, and
express delivery (EMS, UPS, DHL, TNT, FEDEX). Please confirm your
preferred method before ordering.
